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Clarify how llvm-mca detects att vs intel syntax.

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Reviewers: andreadb

Subscribers: tschuett, gbedwell, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D72385
This commit is contained in:
Justin Lebar 2020-01-07 21:16:36 -08:00
parent de050b39a1
commit 5a0d33afcf
1 changed files with 4 additions and 0 deletions
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docs/CommandGuide/llvm-mca.rst
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@ -40,6 +40,10 @@ Or for Intel syntax:
$ clang foo.c -O2 -target x86_64-unknown-unknown -mllvm -x86-asm-syntax=intel -S -o - | llvm-mca -mcpu=btver2
(:program:`llvm-mca` detects Intel syntax by the presence of an `.intel_syntax`
directive at the beginning of the input. By default its output syntax matches
that of its input.)
Scheduling models are not just used to compute instruction latencies and
throughput, but also to understand what processor resources are available
and how to simulate them.